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1. DebugAgentLib will install reserved vector table to persist vectors.

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2. Update PeCoffExtraActionLib to detect if debug agent initialized or not by checking each IDT entry instead of whole IDT table.

Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14886 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Jeff Fan
2013-11-22 06:30:01 +00:00
committed by vanjeff
parent e41aad1521
commit 8cc26df4a6
17 changed files with 350 additions and 37 deletions
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17
SourceLevelDebugPkg/Library/PeCoffExtraActionLibDebug/PeCoffExtraActionLib.c
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@@ -80,18 +80,21 @@ PeCoffLoaderExtraActionCommon (
IdtEntryHooked = FALSE;
LoadImageMethod = PcdGet8 (PcdDebugLoadImageMethod);
AsmReadIdtr (&IdtDescriptor);
if (!CheckDebugAgentHandler (&IdtDescriptor)) {
if (LoadImageMethod == DEBUG_LOAD_IMAGE_METHOD_SOFT_INT3) {
if (LoadImageMethod == DEBUG_LOAD_IMAGE_METHOD_SOFT_INT3) {
if (!CheckDebugAgentHandler (&IdtDescriptor, SOFT_INT_VECTOR_NUM)) {
//
// Do not trigger INT3 if Debug Agent did not setup IDT entries.
//
return;
}
//
// Save and update IDT entry for INT1
//
SaveAndUpdateIdtEntry1 (&IdtDescriptor, &OriginalIdtEntry);
IdtEntryHooked = TRUE;
} else {
if (!CheckDebugAgentHandler (&IdtDescriptor, IO_HW_BREAKPOINT_VECTOR_NUM)) {
//
// Save and update IDT entry for INT1
//
SaveAndUpdateIdtEntry1 (&IdtDescriptor, &OriginalIdtEntry);
IdtEntryHooked = TRUE;
}
}
//